Say: "See ye?- If your stream be some morning lost (in the underground earth), who then can supply you with clear-flowing water?" (30)
Tafsir
When the addressee is not convinced by reasoning, the preacher repeats his utterances of firm faith and thus stirs his inner self into awakening. Even if there is the slightest sensitivity in a man, these last utterances are enough to make him feel the urge to reform himself. But one whose conscience has been completely blunted, can never be awakened by any device.
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